1-Methyl-1H-imidazole-2-sulfonyl chloride

Also known as: 1-Methylimidazole-2-sulfonyl chloride, 2-Chlorosulfonyl-1-methylimidazole, 1-MethyliMidazole-2-sulfonyl chloride 95%, 1-Methyl-1H-imidazol-2-sulfonyl chloride, 1-Methylimidazole-2-sulphonyl chloride, 1H-Imidazole-2-sulfonyl chloride, 1-methyl-

1-Methyl-1H-imidazole-2-sulfonyl chloride (CAS 55694-81-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H5ClN2O2S and a molecular weight of 180.61300 g/mol. Key properties include a melting point of 66-71ºC, a boiling point of 355.842ºC at 760 mmHg, a density of 1.605 g/cm3 and a flash point of 169.007ºC. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage and H334 — May cause allergy or asthma symptoms if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 55694-81-0
Jingsj CID: J-1042625-2
Molecular Formula: C₄H₅ClN₂O₂S
Molecular Weight: 180.61300 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	66-71ºC
Boiling Point	355.842ºC at 760 mmHg
Density	1.605 g/cm3
Flash Point	169.007ºC
Exact Mass	179.97600
PSA	60.34000
LogP	1.42840

GHS Safety & Compliance

Corrosion / Health HazardSignal word: Danger

H314 — Causes severe skin burns and eye damage
H334 — May cause allergy or asthma symptoms if inhaled

Customs & Trade Information

HS Code	2933290090
Summary	2933290090. other compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1-Methyl-1H-imidazole-2-sulfonyl chloride?

The CAS number of 1-Methyl-1H-imidazole-2-sulfonyl chloride is 55694-81-0.

What are the molecular formula and molecular weight of 1-Methyl-1H-imidazole-2-sulfonyl chloride?

1-Methyl-1H-imidazole-2-sulfonyl chloride has molecular formula C4H5ClN2O2S and molecular weight 180.61300 g/mol.

Is 1-Methyl-1H-imidazole-2-sulfonyl chloride hazardous?

1-Methyl-1H-imidazole-2-sulfonyl chloride has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage; H334 — May cause allergy or asthma symptoms if inhaled.

What are the upstream and downstream products of 1-Methyl-1H-imidazole-2-sulfonyl chloride?

For 1-Methyl-1H-imidazole-2-sulfonyl chloride, Upstream Products: Methimazole.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "1-Methyl-1H-imidazole-2-sulfonyl chloride (CAS 55694-81-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1042625-2 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.